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watchtower/internal/util/rand_sha256.go

25 lines
558 B
Go

package util
import (
"bytes"
"fmt"
"math/rand"
)
// GenerateRandomSHA256 generates a random 64 character SHA 256 hash string
func GenerateRandomSHA256() string {
return GenerateRandomPrefixedSHA256()[7:]
}
// GenerateRandomPrefixedSHA256 generates a random 64 character SHA 256 hash string, prefixed with `sha256:`
func GenerateRandomPrefixedSHA256() string {
hash := make([]byte, 32)
_, _ = rand.Read(hash)
sb := bytes.NewBufferString("sha256:")
sb.Grow(64)
for _, h := range hash {
_, _ = fmt.Fprintf(sb, "%02x", h)
}
return sb.String()
}